Improvement in machines for tenoning window-sash



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FRANK C. CHAPMAN, 0F CHICAGO, ILLINOIS, ASSIGNOR TO DENNIS BEACH, OF SAME PLACE.

Letters Patent No. 107,222, dated September 13, 1870.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, FRANK G. CHAPMAN, of Chicago, in the county of Cook and State of Illinois@ have invented new and useful lImprovements in Sashlenoning Machines; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable others skilled in the artic which my invention appertains to make and use the same, reference being had to the accompanying drawing forming part of this specification.

Figure l is a front elevation of a tenoulng-xnachine, to which my improvements are applied;

Figure 2 is an end view of the same;

Figure 3 is a plan view of the table carrying the dovetailing lift;

Figure 4 is an end view, and v Figure 5 a side view of the saine.

Similar letters of reference indicate corresponding parts in -the several figures of the drawing.

My invention has for its object to tenen one or both .ends of a sash-rail, and cope and dovctail the tenons at one operation; and, to this end,

' It consists, primarily, in the construction of the table carrying the sash-rail, as will be hereinafter more fully described.

In the accompanying drawing- A A A is the frame of the machine, carrying the main driving-shaft B, and the operating parts.

C and C are uprights, placed opposite to cach other upon the frame, the one C being firmly secured thereto, near one edge, and the other C' adapted to be moved back and forth, along the top of said fra-mc, in line with the upright C, by means of the operating-screw I), which works through a projection, E, upon thc under side of the upright C', as shown by dotted lines, lig. 1. rlhis projection travels in a slot formed in the bed or top of the fraine A, as will be readily understood.

The upright is locked or scoured firmly in the desired position by means of the screw and hand-uut E', shown in ig. 1. i

F F are boxes carrying the shafts of thc cutterheads G, and are arranged two upon each upright, one above the other.

Ihe boxes upon cach upright are capable of independent vertical adj nstment, to regulate the distance apart of the cutter-heads, by means of the handscrews II II, shown in figs. 1 and 2.

The cutter-heads are driven from the main shaft B by means of belts passing around the pulleys I upon the cutters, and I upon the shafts of thc cutter-heads.

J are the coping-heads, on a lille, or nearly so, with the lower cutter-heads Cr, and rotating horizontally upon the vertical shafts J.

One of the coping-heads is shown by dotted lines, I

". 2. l CThey are also driven from the main shaft by belts passing around the pulleys K K.

Z Z are fast and loose driving-pulleys on the main shaft A, operating in the usual manner.

L is the table for carrying the sash-rail to. be operated upon, and is arranged for operation between the twouprights C C.

The end pieces a a of the table are grooved upon their under surfaces to (it and Slide upon the guideways M M', the first of which is firmly secured to the frame A, near the upright C, and the latter' attached to and traveling with the upright C.

The frame is composed of two parts, so that it can be 'extended to conform to the position of the uprights, with relation to each other, and for this purpose the arms b b are slotted, those of one part sliding upon those of the other.

They are also provided with set-screws c, by which which the frame is. locked seeurel y when extended or contracted.

d d are stops upon the end pieces a a, and

f f are adjustable lifts upon the opposite ends of said pieces.

The sash-rail to be operated upon is first placed upon vthe table, longitudinally of the same, resting against the stops (l d, the table being drawn to the front of the A machine.

It is then pushed back, by hand or otherwise, carrying the ends of the rail over the lower cutter-heads G, andpast the coping-heads J. A

This operation cuts and comple-tes the face side of tenen, including the coping.

The rail is then placed upon the lifts ff, with the shoulders of the tenons' bearing against the adjustable gauges g g, and thc table moved to the front of the machine, carrying the tenon beneath the upper cutter-heads G, which forni the bevels or dovetails upon. the same.

The lifts are adapted for adjustment upon the side pieces a, by'meaus of the segments h and set-serews i, and the inclination given to the lifts -by this means determines the bevel or dovetail of the tenons.

The gauges g are made adjustable for adaptation to various lengths of tenons, while the whole table is made adjustable to conform to theadjustability of the upright C', for the purpose of accommodating sashchines, provided .with adjustable lifts f for determining the bevel of the doveta-ils upon sash-rails, subtion of Ienons and dovetails simultaneously upon both stantially as described. ends of sash-rails of different lengths, substantially as 2. The adjustable table L, provided with the addescribed.

justable lifts j', stops d, and adjustable gauges g, for FRANK G. CHAPMAN. the purpose specified.

3. The sliding table L of a dovetailing and tenon- Witnesses:

ing-machine, provided with the adjustable lifts 71, and G. H. FROST,

made adjustable longitudinally, to permit the forma- I). J. POWERS. 

